When is colorectal cancer screening recommended for ulcerative colitis?

Ulcerative colitis affects the lining of the large bowel and can cause ongoing or recurring inflammation. Over time, inflammation-related cell changes may need careful assessment. Surveillance is different from investigating new symptoms: it is planned monitoring for people whose colitis involves enough of the colon to make it relevant. Your gastroenterology team considers when the disease began, how much bowel is involved, how active inflammation has been, previous findings, and family history.

Ask your gastroenterology team when surveillance should begin and how often it should be repeated for your risk profile. Keep appointments even when symptoms are quiet, because surveillance is planned around disease history rather than how you feel on one day. Tell the team about family history, previous bowel findings, changes in symptoms, and medicines. Follow preparation instructions carefully if a colonoscopy is arranged, and ask about sedation, medication changes, and how results will be explained.

Contact a clinician promptly for a marked change in bowel habit, increasing rectal bleeding, persistent abdominal pain, unexplained weight loss, fever, or symptoms of a significant flare. Seek urgent help for heavy bleeding, severe abdominal swelling or pain, repeated vomiting, fainting, or inability to keep fluids down. Do not wait for a scheduled surveillance test when symptoms are rapidly worsening.

Ask: Does the extent of my colitis make surveillance appropriate? When should my next test be arranged? What did previous biopsies show? How should I prepare, and which symptoms should be reported before the appointment?